The Structure Arrangement And 3D Finite Element Analysis Of Hydraulic Arc Strobe

Arc strobe is widely used in hydraulic and hydroelectric engineering. Structural mechanics means is often adopted in its physical design. In this means, plane system, such as pole, rigid frame, beam, and board and shell model are considered as the main component of the strobe. The key problem of the means is that it can not reflect steel strobe's space weighted practical situation completely and exactly. It is an effective way to adopt space finite element method(FEM) to reflect it's space weighted practical situation exactly. But FEM involves manifold space structure configurations(board, shell, rigid frame, beam, pole), complicated element choice, grid mesh and their connect way. So it is quite important to study the modeling, element configuration choice and connect way of each part of steel strobe in the space FEM analysis.In the paper, the modeling method in space FEM analysis of arc steel strobe structure are explored and researched; material measurements of element configuration choice and connect way of each part of steel strobe are discussed; the logical principle of structure arrangement and structural mechanics computation model of large-scale arc steel strobe are studied. It inaugurates a new approach to the design of arc strobe. Taking Xihe water power station for example, the paper analyzes the distribution regulation of stress and displacement of main components of arc strobe, modeled by large scale FEM software ADINA. Meanwhile, it is checked that whether the dimension of main components satisfies with the require of intensity, stabilization, rigidness of arc strobe. The validity and practicability of space FEM used in engineering are analyzed and validated combining with antitype observation data, which also proves the validity of the model in this paper. Sensible principle of structure arrangement and structural mechanics computation model that can reflect the work characteristics of large scale arc strobe and can avoid torsional deformation of these thin cliff components are brought forward, which offers more credible structure computation method for similar design of steel strobe, thereby the intention to advance the structure bearing capacity and depress material consumption is achieved.